教師資料查詢 | 類別: 期刊論文 | 教師: 董崇禮 CHUNG-LI DONG (瀏覽個人網頁)

標題:Molecular Design of Polymer Heterojunctions for Efficient Solar–Hydrogen Conversion
學年105
學期2
出版(發表)日期2017/06/06
作品名稱Molecular Design of Polymer Heterojunctions for Efficient Solar–Hydrogen Conversion
作品名稱(其他語言)
著者J. Chen;C. L. Dong;D. Zhao;Y. C. Huang;X. Wang;L. Samad;L. Dang;M. Shearer;S. Shen; L. Guo
單位
出版者
著錄名稱、卷期、頁數Advanced Materials 29(21), 1606198(1-10 pages)
摘要Semiconducting photocatalytic solar–hydrogen conversion (SHC) from water is a great challenge for renewable fuel production. Organic semiconductors hold great promise for SHC in an economical and environmentally benign manner. However, organic semiconductors available for SHC are scarce and less efficient than most inorganic ones, largely due to their intrinsic Frenkel excitons with high binding energy. In this study the authors report polymer heterojunction (PHJ) photocatalysts consisting of polyfluorene family polymers and graphitic carbon nitride (g‐C3N4) for efficient SHC. A molecular design strategy is executed to further promote the exciton dissociation or light harvesting ability of these PHJs via alternative approaches. It is revealed that copolymerizing electron‐donating carbazole unit into the poly(9,9‐dioctylfluorene) backbone promotes exciton dissociation within the poly(N‐decanyl‐2,7‐carbazole‐alt‐9,9‐dioctylfluorene) (PCzF)/g‐C3N4 PHJ, achieving an enhanced apparent quantum yield (AQY) of 27% at 440 nm over PCzF/g‐C3N4. Alternatively, copolymerizing electron‐accepting benzothiadiazole unit extended the visible light response of the obtained poly(9,9‐dioctylfluorene‐alt‐benzothiadiazole)/g‐C3N4 PHJ, leading to an AQY of 13% at 500 nm. The present study highlights that constructing PHJs and adapting a rational molecular design of PHJs are effective strategies to exploit more of the potential of organic semiconductors for efficient solar energy conversion.
關鍵字
語言英文
ISSN
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別中華民國
公開徵稿
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